3M Aqua-Pure (Solventum) AP903 whole-house vs Waterdrop WHF21-FG iron & manganese whole-house
Only the 3M Aqua-Pure (Solventum) AP903 whole-house is certified to reduce chlorine. Verdict: the 3M Aqua-Pure (Solventum) AP903 whole-house for broader certified protection (1 vs 0 of the contaminants we track).
| 3M Aqua-Pure (Solventum) AP903 whole-house | Waterdrop WHF21-FG iron & manganese whole-house | |
|---|---|---|
| Type | Whole-house | Whole-house |
| Price | — | $200 |
| Filters + water a year (2 people) | — | $160 |
| Filter cost per gallon (rated life) | — | — |
| Gallons per day | — | — |
| Pure to drain | — | — |
| Installation | plumber | plumber |
| Chlorine | Certified | Brand test only |
| Iron | — | Brand test only |